1. Made of good quality materials, sturdy, waterproof and durable.2. Premium LED light bead, super bright and durable.3. Powered by two AAA batteries, energy-saving design ensures long working time with less frequency of battery change.4. Compact and lightweight, easy to install and convenient to use.5. Strong illuminative effect, a great accessory to ensure your safety when riding at night.Light Bead Quantity: 5 x LEDPower Supply: 2 x AAA Batteries (not included)Waterproof: RainproofColour: redMaterial: plasticSize: 8 x 4.2cmPackage Contents:2 x tail light2 x lamp holder4 x strapsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.